This Cl includes

* A getter for echo_state
* Style changes, such as changes to int where appropriate

TEST=audioproc_unittest, trybots
BUG=None

Review URL: https://webrtc-codereview.appspot.com/1093011

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3522 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/audio_processing/aec/aec_core.c

@@ -716,6 +716,11 @@ int WebRtcAec_GetDelayMetricsCore(aec_t* self, int* median, int* std) {
   return 0;
 }
 
+int WebRtcAec_echo_state(aec_t* self) {
+  assert(self != NULL);
+  return self->echoState;
+}
+
 static void ProcessBlock(aec_t* aec) {
     int i;
     float d[PART_LEN], y[PART_LEN], e[PART_LEN], dH[PART_LEN];

webrtc/modules/audio_processing/aec/aec_core.h

@@ -185,5 +185,7 @@ int WebRtcAec_MoveFarReadPtr(aec_t* aec, int elements);
 // Calculates the median and standard deviation among the delay estimates
 // collected since the last call to this function.
 int WebRtcAec_GetDelayMetricsCore(aec_t* self, int* median, int* std);
+// Returns the echo state (1: echo, 0: no echo).
+int WebRtcAec_echo_state(aec_t* self);
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_CORE_H_

webrtc/modules/audio_processing/aec/echo_cancellation.c

@@ -609,27 +609,24 @@ WebRtc_Word32 WebRtcAec_get_config(void *aecInst, AecConfig *config)
     return 0;
 }
 
-WebRtc_Word32 WebRtcAec_get_echo_status(void *aecInst, WebRtc_Word16 *status)
-{
-    aecpc_t *aecpc = aecInst;
+int WebRtcAec_get_echo_status(void* handle, int* status) {
+  aecpc_t* self = (aecpc_t*)handle;
 
-    if (aecpc == NULL) {
-        return -1;
-    }
+  if (handle == NULL ) {
+    return -1;
+  }
+  if (status == NULL ) {
+    self->lastError = AEC_NULL_POINTER_ERROR;
+    return -1;
+  }
+  if (self->initFlag != initCheck) {
+    self->lastError = AEC_UNINITIALIZED_ERROR;
+    return -1;
+  }
 
-    if (status == NULL) {
-        aecpc->lastError = AEC_NULL_POINTER_ERROR;
-        return -1;
-    }
+  *status = WebRtcAec_echo_state(self->aec);
 
-    if (aecpc->initFlag != initCheck) {
-        aecpc->lastError = AEC_UNINITIALIZED_ERROR;
-        return -1;
-    }
-
-    *status = aecpc->aec->echoState;
-
-    return 0;
+  return 0;
 }
 
 WebRtc_Word32 WebRtcAec_GetMetrics(void *aecInst, AecMetrics *metrics)

webrtc/modules/audio_processing/aec/include/echo_cancellation.h

@@ -11,7 +11,7 @@
 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC_INCLUDE_ECHO_CANCELLATION_H_
 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_INCLUDE_ECHO_CANCELLATION_H_
 
-#include "typedefs.h"
+#include "webrtc/typedefs.h"
 
 // Errors
 #define AEC_UNSPECIFIED_ERROR           12000
@@ -199,16 +199,16 @@ WebRtc_Word32 WebRtcAec_get_config(void *aecInst, AecConfig *config);
  *
  * Inputs                       Description
  * -------------------------------------------------------------------
- * void           *aecInst      Pointer to the AEC instance
+ * void           *handle       Pointer to the AEC instance
  *
  * Outputs                      Description
  * -------------------------------------------------------------------
- * WebRtc_Word16  *status       0: Almost certainly nearend single-talk
+ * int            *status       0: Almost certainly nearend single-talk
  *                              1: Might not be neared single-talk
- * WebRtc_Word32  return         0: OK
+ * int            return         0: OK
  *                              -1: error
  */
-WebRtc_Word32 WebRtcAec_get_echo_status(void *aecInst, WebRtc_Word16 *status);
+int WebRtcAec_get_echo_status(void* handle, int* status);
 
 /*
  * Gets the current echo metrics for the session.

webrtc/modules/audio_processing/echo_cancellation_impl.cc

@@ -8,16 +8,16 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "echo_cancellation_impl.h"
+#include "webrtc/modules/audio_processing/echo_cancellation_impl.h"
 
-#include <cassert>
+#include <assert.h>
 #include <string.h>
 
-#include "critical_section_wrapper.h"
-#include "echo_cancellation.h"
+#include "webrtc/modules/audio_processing/audio_buffer.h"
+#include "webrtc/modules/audio_processing/audio_processing_impl.h"
+#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
 
-#include "audio_processing_impl.h"
-#include "audio_buffer.h"
+#include "webrtc/modules/audio_processing/aec/include/echo_cancellation.h"
 
 namespace webrtc {
 
@@ -141,7 +141,7 @@ int EchoCancellationImpl::ProcessCaptureAudio(AudioBuffer* audio) {
         }
       }
 
-      WebRtc_Word16 status = 0;
+      int status = 0;
       err = WebRtcAec_get_echo_status(my_handle, &status);
       if (err != apm_->kNoError) {
         return GetHandleError(my_handle);